Stop-motion for looms.



No. 682,445. Patented Sept. [0, I90I.

H. WYMAN.

STOP MOTION FOR LOUMS.

(Application flledjune 7, 1901.) (No Model.) 7 2 Sheets-Sheet J, 7% 5[0woe/ W A No. 682,445. Patented Sept. [0, I90].

H. WYMA'N.

STOP MOTION FOR LOOMS.

(Application filed Jun 7, 1901) (No Model.)

2 Sheets-$heet 2.

llwiTn STaTns PATENT Trice.

HORACE XVYMAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON 6tKNOWLES LOOM WORKS, OF SAME PLACE.

STOPHVIOTlON FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 682,445, datedSeptember 10, 1901.

Application filed June '7, 1901.

To (all whom, it may concern.-

Be it known that I, HORACE \VYMAN, a citizen of the United States,residing at VVorcester, in the county of orcester and State ofMassaehusetts,l1ave invented certain new and useful Improvements in StopMechanism for Looms, of which the following is a specification.

My invention relates to stop mechanism for looms, and more particularlyto an improvement in the warp stop mechanism shown and described in myUnited States Letters Patent No. 665,713, dated January 8, 1901.

The purpose of a warp stop mechanism for looms, as is well known, is toinstantly stop the loom when the warp breaks or becomes too slack.

The object of my invention is to improve upon and simplify that portionof the warp stop mechanism shown and described in said Patent No.665,713, which is located at the front part of the loom on the frarnetooperate the shipper-handle, and more particularly the construction andoperation of the main daggerdifter (lettered 26) in said patent.

My invention consists in certain novel features of construction ofmyimprovements in warp stop mechanism for looms, as will be hereinafterfully described.

I have only shown in the drawings sufficient portions of the warp stopmechanism shown in the drawings of said Patent No. 665,713, with myimprovements applied thereto, to enable those skilled in the art towhich my invention belongs to understand the construction and operationof the same.

Referring to the drawings, Figure 1 is a right-hand side elevation ofthe front portion of a loom with my improvements applied thereto andshowing the lay in its backward position. Fig. 2 corresponds to Fig.1,but shows the lay in its forward position and the stop mechanism inits opposite position. Fig. 3 shows, on an enlarged scale, parts of thestop mechanism shown in Fig. 1; and Fig. 4 is a rear view of the partsshown in Fig. 3 looking in the direction ofarrow a,same figure.

I have used in the drawings the same letters and figures of reference asare used on the corresponding parts in said PatentNo.665,713.

In the accompanying drawings, A is a por- Serial No, 63,586. (No model.)

tion of the loom-frame; A, the lay, pivoted at A and carrying the usualreed a and actuated in the usual way through connectors from thecrank-shaft. (Not shown.) E is the shipper-lever, working in a slot inan extension a, notched at one side on one end of the breast-beam (notshown) in the usual way. All of these parts are of the ordinaryconstruction.

I will now describe the warp stop mechanism with my improvements appliedthereto.

A stand 16 is secured to the side frame A of the loom, and adagger-carrier 19 is mounted to turn on the pivot-stud 20 in the stand16. The lower end of said dagger-carrier 19 has jointed to it at 21 thedagger 22. The lower part of the stand 16 has an extension 16 thereon,which has fast therein astud 75, on which is mounted the maindagger-lifter 76, which has a cam-surface 76 thereon (see Fig. 4:) toengage the under side of the dagger 22 and hold the same out of range ofthe hunter 28, which is attached to the lower end of a stud 31, securedupon the under side of the lay, (see Fig. 1,) while the loom is notrunning or whileit is being operated by the hand of the weaver. Theraising of the dagger 22 by the cam-surface 76 also permits thereadjustment of the dagger-support 35 after the dagger 22 has beenoperated to stop the loom, as will be hereinafter described. Thedagger-lifter 76 moves in a plane at right angles to the plane ofmovement of the dagger 22 and parallel with the plane of movement of theshipper-lever E and has a side extension 76 thereon extending inthe pathof and engaged by the shipper-lever E when the shipper-lever E is in itsoperative position to start the loom. The upper end of the daggerlifter76 has an extension 76', Fig. 4, which extends over the dagger 22 andprevents the operator from throwing back the dagger 22 to render thestop-motion inoperative.

A spring 77 is connected at one end to an extension 78 on the hub of thedagger-lifter 76 and at its other end to a hook or extension 19" on thedagger-carrier 19. The dagger-carrier 19 at its upper end engages andoperates a stop-lever 3t, pivoted at the under side of the breast-beam,(said stop-lever 3st being commonly actuated to unlock the properlyboxed in the ordinary way,) moving said lever 3i and moving theshipper-handle E out of its retaining-notch, so that it will spring intoits inoperative position when the dagger 22 is engaged by the bunter 28,as shown in Fig. 2.

In connection with the main dagger-lifter 76 the second dagger-support35 is provided, centrally pivoted on a stud 36 in the stand 16, with itsupper end adapted to extend under and engage a projection 63 on thedagger 22. The lower end of the second dagger-support 35 has attached toit a connection 38, leading to the warp stop mechanism (not shown in thedrawings, but fully shown and described in Patent No. 665,713, abovereferred to) and through which the operation of the dagger-support 35 iscontrolled to move from under the projection 63 on the dagger 22 andallow the dagger 22 to drop into the position shown in Fig. 2 to beengaged by the hunter 28 on the forward movement of the lay.

When through the breaking of a warpthread or a warp-thread becoming tooloose the second dagger-support 35 through connection 38 is moved intothe position shown in Fig. 2, the dagger 22 will drop into the positionshown in said Fig. 2 to be engaged by the hunter 28 on the forwardstroke of the lay, the dagger-lifter 76 being held in its backwardposition out of engagement with the dagger 22, as shown in Fig. 4, bythe engagem-ent of the shipper-lever E with the side extension 76 onsaid dagger-lifter 76. The engagementof the bunter28 with the dagger 22will move the dagger-carrier 19 on its pivot 20 to cause it to actuatethe stop-lever 34: to move the shipper-lever E out of its retainingnotchin the extension a and allow it to spring back and operate to ship thebelt to stop the loom in the usual way.

Upon the movement of the shipper-lever E,

as above described, the spring 77 immediately acts to rotate thedagger-lifter 76 on its supporting-stud and move the cam-surface 76under the dagger 22 to raise said dagger and move it out of the path ofthe bunter 28, as shown in Fig. 1. At the same time the spring 77 actsto move the dagger-carrier 19 011 its pivot-stud 20 into the positionshown in Fig. l away from the stop-lever 34:. A stop 79 on the stand 16limits the movement of the dagger-carrier 19. The dagger 22 is thus putinto a position where it cannot be struck a second time by the buhter 28and also into a position where the second dagger-support 35shipper-handle whenevera shuttle fails to be i can be moved under thedagger 22 to support it, as shown in Fig. 1. The movement of theshipper-lever E by the hand of the operator to put the loom intooperation will cause it to engage the extension 76" on the dagger-lifter76 and move the dagger-lifter 76 out of engagement with the dagger 22and into the position shown in Fig. 4, while the second dagger-support35 immediately returns to its normal upright position, as shown in Fig.1, thus leaving the parts in an operative position.

The advantages of my improvements will be readily appreciated by thoseskilled in the art. I simplify the construction of the parts shown insaid Patent No. 665,713 and do away with the device shown in said patentattached to the shipper-lever.

It will be understood that the details of construction of myimprovements may be varied, if desired.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a loom, the combination with a dagger, and the shipper-lever, of adagger-lifter, moving in a plane at right angles to the plane ofmovement of the dagger, and operative to engage and hold the dagger inits inoperative position, and having an extension in the path of theshipper-lever, to be engaged thereby, and moved out of engagement withthe dagger, substantially as shown and described.

2. In a loom, the combination with a dagger, and the shipper-lever, of adagger-lifter, having a cam-surface thereon to engage the under side ofthe dagger and hold it in its inoperative position, and having anextension in the path of the shipper-lever, to be engaged thereby, andmoved out of engagement 1 with the dagger, substantially as shown anddescribed.

3. In a loom, the combination with a dagger, and the shipper-lever, of adagger having a cam-surface thereon to engage the under side of thedagger and hold it in its inoperative position, and having an extensionin the path of the shipper-lever to be engaged thereby, and moved out ofengagement with the dagger, and also an extension over the dagger, toprevent the dagger being raised out of its position, substantially asshown and described.

HORACE WYMAN. \Vitnesses:

J. O. DEWEY, M. HAAS.

